v3.19.1
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS - Notional Principal or Quantity Information (Details) - Mar. 31, 2019
€ in Millions, ¥ in Millions, £ in Millions, MMBbls in Millions, $ in Millions, $ in Millions, Bcf in Billions
USD ($)
MWh
Bcf
MMBbls
CAD ($)
MWh
Bcf
MMBbls
GBP (£)
MWh
Bcf
MMBbls
EUR (€)
MWh
Bcf
MMBbls
JPY (¥)
MWh
Bcf
MMBbls
Euro          
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS          
2020 | €       € 23  
2021 | €       94  
Foreign exchange contracts - forwards - purchase | United States dollar          
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS          
2019 $ 895        
2020 1        
Foreign exchange contracts - forwards - purchase | Euro          
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS          
2019 | €       168  
Foreign exchange contracts - forwards - purchase | Japanese yen          
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS          
2019 | ¥         ¥ 32,662
2022 | ¥         ¥ 20,000
Foreign exchange contracts - forwards - sell | United States dollar          
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS          
2019 3,839        
2020 4,893        
2021 3,608        
2022 1,944        
2023 1,804        
Thereafter $ 1,856        
Foreign exchange contracts - forwards - sell | GBP          
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS          
2019 | £     £ 86    
2020 | £     25    
2021 | £     27    
2022 | £     28    
2023 | £     29    
Thereafter | £     £ 120    
Foreign exchange contracts - forwards - sell | Euro          
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS          
2022 | €       94  
2023 | €       92  
Thereafter | €       € 606  
Interest rate contracts - short-term borrowings          
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS          
2019   $ 6,629      
2020   6,178      
2021   4,142      
2022   407      
2023   48      
Thereafter   156      
Interest rate contracts - long-term receive fixed rate          
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS          
2019   0      
2020   0      
2021   0      
2022   0      
2023   0      
Interest rate contracts - long-term debt pay fixed rate          
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS          
2019   2,537      
2020   3,142      
2021   1,584      
Equity contracts          
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS          
2019   32      
2020   $ 20      
Commodity contracts | Natural gas          
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS          
2019 | Bcf (75) (75) (75) (75) (75)
2020 | Bcf (15) (15) (15) (15) (15)
2022 | Bcf (84) (84) (84) (84) (84)
2023 | Bcf 1 1 1 1 1
Commodity contracts | Crude oil          
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS          
2019 | MMBbls 4 4 4 4 4
2020 | MMBbls (2) (2) (2) (2) (2)
Commodity contracts | NGL          
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS          
2019 | MMBbls 1 1 1 1 1
Commodity contracts | Power          
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS          
2019 | MWh 98 98 98 98 98
2020 | MWh 80 80 80 80 80
2021 | MWh (3) (3) (3) (3) (3)
2022 | MWh (43) (43) (43) (43) (43)
2023 | MWh (43) (43) (43) (43) (43)
Thereafter | MWh (43) (43) (43) (43) (43)